1 uname-r
2 yum -y update
3 yuminstall-yyum-utils device-mapper-persistent-data lvm2
4 yum-config-manager --add-repo http://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo
5 yum makecache fast
6yum -y install docker-ce
7 systemctl start docker